 	body{
    	margin:0;
    	height:100%;
    	background-color:#ecf5fa;
    }
    .div_1{
    	/*文字垂直居中*/
        /*padding:0 auto;*/
        position:absolute;
    	left:0;
    	top:0;
    	width:100%;
    	line-height:50%;
    	background-color:#336699;
    	color:white;
    }
    .div_2{
    	background-color:white;
    	width:1000px;
    	height:672px;
    	align:center;
    	margin:0 auto;
    	padding:20px;
    }
    h2{
    	margin:20px;
    	padding-top:20px;
    	color:#98c8ef;
    }
    table{
    	height:500px;
    	width:900px;
    	border:1px solid #99cccc;
    	border-collapse:collapse;
    	margin:0 auto;
    	text-align:center;
    }
    tr,
    td{
    	border:1px solid #99cccc;
    }
    th{
    	border:2px solid #99cccc;
    	background:#66cccc;
    }
    .td_1{
    	background:#ccffff;
    }
    input{
    	width:120px;
    	height:30px;
    	background:#ccffff;
    	border:1px solid #99cccc;
    	border-radius:5px;
    	display:block;
    	margin:60px auto;
    }
    .div_3{
    	line-height:30px;
    	background:#e6e5e5;
    	color:#706c6a;
        font-size:5px;
    	text-align:center;
    	margin:0 auto;
    	padding:0 auto;
    }